/* header 下方导航栏 */
nav{
    height: 50px;
    width: 100%;
    margin-top: 1px;
    background-color: rgb(255,255,255);
}
.nav-mainUl{
    margin-left: 230px;
    width: 566px;
    height: 50px;
}
.nav-mainUl li{
    float: left;
    height: 50px;
    margin: 0 13px;
    font-size: 13px;
    line-height: 50px;
    text-align: center;
    cursor: pointer;
}
.nav-mainUl li:hover{
    color: #007fff;
}
.nav-ChildUl{
    display: none;
    position:absolute;
    top:115px;
    height: 180px;
    width: 310px;
    box-shadow: 0 0 20px 0 #cfd1d4;
    background-color: rgb(255,255,255);
    z-index: 5;
}
.nav-ChildUl li{
    float: left;
    height: 20px;
    margin: 9px 7px;
    padding: 2px 6px;
    border-radius: 16px;
    font-size: 13px;
    background-color: rgb(234, 236, 236);
    cursor: pointer;
}
.nav-ChildUl li a:hover{
    color: #007fff;
}

@media screen and (max-width:1040px){
    .nav-mainUl{margin: 0 auto;}
}

.beChosen{
    color: #007fff !important;
}